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https://issues.apache.org/jira/browse/JDO-652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16674473#comment-16674473
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Michael Bouschen commented on JDO-652:
--------------------------------------
I checked in patch JDO-652-patch4.txt (see revision 1845744).
With this checkin I see the following errors and failures:
* query.conf: Failures: 5, Errors: 19
* jdoql.conf: Failures: 0, Errors: 10
The errors are because datanucleus does not implement the latest API changes
(IfThenElseExperssion, min and max expressions, Map.get, String.startsWith).
The failures are due to unexpected results of the test queries:
* It looks like distinct is not working (see test class DistinctQuery).
* The JDOQLTypedQuery API misses a way to specify the kexs when the query is
returing a map similar to the as clause in the single string version (see class
ResultClassRequirements method testMap). Maybe we can add a method as(String
name) to Expression.
> Provision of a typesafe refactor-friendly query capability for JDOQL
> --------------------------------------------------------------------
>
> Key: JDO-652
> URL: https://issues.apache.org/jira/browse/JDO-652
> Project: JDO
> Issue Type: New Feature
> Components: api, specification, tck
> Reporter: Andy Jefferson
> Assignee: Michael Bouschen
> Priority: Major
> Fix For: JDO 3.2
>
> Attachments: JDO-652-api-ifTheElse.txt, JDO-652-api-patch-Andy.txt,
> JDO-652-patch4.txt, typesafe.patch, typesafe_manifest.patch
>
>
> There are various querying capabilities of this type around. JPA2 has its
> Criteria query API. Third party solutions like QueryDSL also exist, in its
> case providing a JDOQL implementation (as well as JPQL, and HQL). We should
> seriously consider introducing something along these lines in the JDO2.4
> timeframe.
> There is a comparison of JPA Criteria with QueryDSL over at
> http://source.mysema.com/forum/mvnforum/viewthread_thread,49
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